VINACONEX 21 Joint Stock Company, formerly Vietnam Construction Joint Stock Company No 21 (Vinaconex 21), is a Vietnam-based company engaged in the construction and engineering industry. It constructs commercial, residential and manufacturing buildings, as well as infrastructures. The Company is also involved in real estate operations through the development of apartment and office buildings for sale, as well as the manufacture and trade of ready-mix concrete. In addition, it offers hotel and motel services, as well as tourism services.